Technology / product information

The "Plano Concave Lens" has a flat surface on one side and a concave surface on the other, characterized by its negative focal length. It is ideal for applications such as image reduction, light diffusion, and beam expansion. When combined with other lenses, it significantly enhances the flexibility of optical system design, particularly for extending working distances and expanding LD beams.

The lenses are standardly uncoated but can be customized with anti-reflection coatings or other specialized coatings upon request.

SUGITOH OPTICAL (THAILAND) CO., LTD., based in Samut Sakhon, Thailand, supplies high-quality optical products across the country. By utilizing Japanese precision technology and ensuring fast production and supply locally in Thailand, the company meets diverse domestic and international demands.

■ Features
・Designed with negative focal length for image reduction and light diffusion
・High-precision optical performance: ±2% focal length tolerance
・Excellent surface quality: MIL 60-40 standard
・Customizable: anti-reflection coating available
・High durability: beveled edges for protection

■ Specifications
・Material: BK-7
・Refractive Index: 1.51680/nd
・Design Wavelength: 587.6nm
・Dimensions: Diameters from 5mm to 100mm available
・Tolerances:
Diameter: +0mm/-0.1mm
Center Thickness: ±0.2mm
Focal Length: ±2%
Decentration: Within 3' (arc minutes)
・Surface Quality: MIL 60-40 standard

■ Applications
・Automatic collimators
・Optical detection devices
・Laser collimation
・Infinity-corrected objective lenses

About SUGITOH OPTICAL (THAILAND) CO., LTD. Located in Samut Sakhon, the company leverages Japanese optical technology to manufacture high-quality optical products efficiently in Thailand. It caters to the needs of both domestic and international customers, offering solutions for a wide range of applications, from industrial to research uses.

For more information, download the PDF or contact us directly.